Timberline Drilling, formerly known as Kettle Drilling, is a contract drilling subsidiary of Timberline Resources. It specializes in a range of core drilling services in the United States. The company undertakes mining operations and development projects. Timberline Drilling also provides underground and surface core drilling solutions. It uses the Atlas Copco U8, Boart Longyear LF-70 and Sandvik DE130 drilling rigs. The company provides services for salt and coal mine and various types of construction applications. In addition, Timberline Drilling offers hydraulic control systems and modules. It works with several mineral producers, such as Barrick, Newmont, Teck Cominco and Kinross.